1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18package java.beans;
19
20import java.util.EventListener;
21
22/**
23 * A PropertyChangeListener can subscribe with a event source. Whenever that
24 * source raises a PropertyChangeEvent this listener will get notified.
25 */
26public interface PropertyChangeListener extends EventListener {
27
28    /**
29     * The source bean calls this method when an event is raised.
30     *
31     * @param event
32     *            the {@link PropertyChangeEvent} object which contains the name
33     *            and the old and new value of the property that has changed.
34     */
35    public void propertyChange(PropertyChangeEvent event);
36}
37